hello everyone,
i am getting problems in graph plotting. When i attach file after adding
color attributes in my data set. i got problem of "GlobalEnv"  and masked
the followings. Like this

>attach(machm)
The following object(s) are masked _by_ '.GlobalEnv':

    coll, sp
The following object(s) are masked from 'mach':

    angle, area, dis, plot, sp
>xmach=dis*sin(angle/180*pi); ymach=dis*cos(angle/180*pi)
>plot(xmach,ymach, xlim=c(-5,5),ylim=c(-5,5), pch=19, cex=
machm$area*0.05,col=machm$coll)


Graph did not take right R color code.
How can i solve this problem?,  As i am the newest user of R programme.

with regards,
ashok

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